Super Mario Bros. speedrunner Kosmic seems to have shaved the record time for completing the 1985 Nintendo Entertainment System classic by three frames, based on a video and Tweet he posted early this morning.

Kosmic said on Friday that he beat the Super Mario Bros. world record held by ace player Darbian by a single frame. He walked that claim back after detecting a “lag frame” earlier in the run.

This time, he said on Twitter, there was no lag frame. He is reporting the completion time at 4:57.194 and originally streamed the feat on Twitch. The run is embedded atop this post.